Nut-lock



(No Model.)

J. w. B. COOK.

NUT LOOK.

No. 593,515. PatentdNov. 9,1897.

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UNITED STATES PATENT OFFIGE.

JOHN w. n. cook, on CAMDEN, ARKANSAS.

NUT-LOCK.

SIECIFICATION forming part of Letters Patent No. 593,515, dated November9, 1897.

Application filed April 9, 1897. Serial No. 631,448. (No model.)

To (l/ZZ 2071,0711, it may concern.-

Be it known that 1, JOHN \/V. B. COOK, a citizen of the United States,residing at Camden, in the county of Ouachita and State of Arkansas,have invented certain new and use ful Improvements in Nut-Locks; and Ido hereby declare the following to be a full,

clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to improvements in n ut-locks; and it consists ofthe novel device for looking a nut in position on a bolt hereinafterdescribed and claimed.

To more fully describe my invention, reference is had to theaccompanying drawings, in which similar parts are indicated by similarletters throughout the several views.

Figure 1 represents a perspective View of my nut-lock when in use. Fig.2 represents a perspective view of the nut-lock when separated from thebolt and nut. Fig. 3 represents the nut-lock in front elevation. Fig. 4represents a similar View of a nut-lock differing somewhat from thatshown in the preceding views; and Fig. 5 represents a section along theline 5 5, Fig. 3, and looking in the direction of the arrow.

My improved nut-lock consists of a metal plate A, perforated, as at Band B, the said plate being split transversely, as at C, andlongitudinally, as at D, and the splitD extending from one of saidperforations to the other. The plate A is preferably made of temperedmetal, and in all cases it is sprung in such a manner as to form aspring-washer around the bolt, which is done by bending the portions 2)and b outward and the portion b inward.

To look the nut E, for example, the plate A is placed upon the bolt F,with the bolt passin g through the aperture B. The nut is then screwedon the bolt until the plate is bound between the nut and. the face ofthebody being bolted or against a washer, as the case may be. The plateA, being sprung around the apertures B and B, as described, forms aspring-washer, which takes up all of the lateral play of the bolt thatmay be caused by constant jarring or otherwise. When the nut is thustightly screwed against the outer face of the plate A, remembering thatthe split portions 1) and b are sprung outward and naturally have agreater degree of resiliency than the body of the plate, the portion 1)will be forced against the surface of the body being bolted, as againstthe block H, Fig. 1. l/Vhen the bolt has thus forced back the portion I)of the plate, the portion 6, owing to its resiliency, will remain sprungafter the nut has passed over it, and will thus engage one side of thenut, as shown in Fig. 1. The nut being thus engaged by the portion 1)will be locked in that position, as it cannot be rotated in a directionto unscrew it from the bolt owing to the obstruction formed by theportion 1). I

Unlike other nut-locks in which a spur or corner of metal is placed inengagement with the side of the nut to prevent the same from rotatingbackward my device possesses great strength.

The plate A being extremely simple may be easily and cheaplymanufactured. The spring-washer effect of the plate takes up all lateralplay of the bolt, while the shoulder 11 prevents the nut from beingturned in a direction to unscrew the same when once in the desiredposition unless it becomes necessary to unscrew the nut, when theportion 1) of the plate may be pressed down by a suitable instrument andthe nut unscrewed by passing backward over what was before anobstruction. The washer-plate may be split from either side and the samemay be varied to suit either a right-handed or a left-handed nut withoutdeparting from my invention. The said plate may also be held againstrotation, when required, by means of a flange or a stud on the saidplate or any other suitable means preferred or adapted to the locationof the said plate. I may also, if desired, use a latch similar to thatshown and described in my prior patent, No. 534,201, dated February 12,1895, or any equivalent device for unlocking the nut.

While I have shown my improved washerplate and nut-lock as applied to abolt passing through a simple block, it will be obvious that itsapplication would not be restricted to such a simple construction, asthat shown is merely for the purpose of illustration.

The size and shape of the plate A may be varied within wide limits tosuit existing conditions, and one plate of sufficient length may be usedto lock any number of bolts. The apertures through the said plate neednot be round, but either or both of them may be square or any othersuitable shape.

Having thus decribed my invention, what I claim, and desire to secure byLetters Patent of the United States, is

1. A nut-lock comprising a plate provided with an opening for thepassage of a bolt, and a second opening a short distance therefrom; thesaid plate being slit longitudinally from one opening to the other, andslit transversely from one edge thereof to said longitudinal slit; andthe portion of said plate adjacent to one side of said transverse slitbeing bent out- Wardly therefrom, substantially as described.

2. A nut-lock comprising a plate provided with an opening for thepassage of abolt, and a second opening a short distance therefrom; thesaid plate being slit longitudinally from one opening to the other, andslit transversely from one edge thereof to said longitudinal slit; andthe portions of said plate adjacent to said transverse slit being bentoutwardly therefrom, substantially as described.

3. The herein-described Washer and nutlock,comprising the plate A ofresilient metal, provided with an opening B for the passage of a bolt;and a second opening B a short distance therefrom; and said platehavingv longitudinal slit D extending from one opening to the other, andtransverse slit 0 extending from the side edge of said plate to saidlongitudinal slit; the portion b adjacent to the bolt-opening B and saidtransverse slit being bent outwardly to form a spring-washer, and theportion 1) adjacent to said second opening B being bent outwardly toform a spring-stop to prevent the backward turning of the nut whenscrewed up, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN \V. B. COOK. Witnesses:

D. B. RAMSEY, J. B. FRIEDHEIM.

